Magmatic evolution of volcanic rocks near Stocking Lake, Ladysmith
Bibliographic record
Abstract
The Stocking Lake area, located south of Ladysmith, B.C., has been previously mapped as middle Devonian Nitinat formation belonging to the Sicker arc volcanics, and hosting an intrusion of Upper-Triassic Mount Hall Gabbro. The evolution of each sample and a comparison to previously published regional data from the Sicker and Karmutsen formations are examined through thin section and major oxide geochemical data in order to answer the following hypotheses: • If the samples originate from the same magma chamber then linear trends are expected to plot on both Harker bivariate and scandium-pyroxene fractionation diagrams and thin section analysis will show similar mineral assemblages between samples, despite the variation in texture. • If sample LS-19-07 is pyroclastic then the thin section will show fragmented crystal assemblages and devitrification of the glassy matrix into radiating crystal lathes. • If the volcanic rocks originated in an island arc setting, they should show a calc-alkaline geochemical signature when plotted on an AFM diagram. If a tholeiitic signature is observed the AFM diagram is inconclusive and a tectonic discrimination must be plotted. • If the existing regional data sets and maps are correct, our major oxide geochemical data will indicate that all samples belong to the Nitinat formation except for sample LS-19-29, which should belong to the Mt Hall Gabbro. We hypothesize that the local Nitinat deposit is not a series of separate flows, as it may appear, but one eruptional event varying in magmatic composition and texture due to crystal-melt segregation and liquid extraction.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.001 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.020 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".